23144420154500 has 96 divisors (see below), whose sum is σ = 50736872659200. Its totient is φ = 9223109280000.

The previous prime is 23144420154481. The next prime is 23144420154503. The reversal of 23144420154500 is 545102444132.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23144420154503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231484520 + ... + 231584480.

It is an arithmetic number, because the mean of its divisors is an integer number (528509090200).

Almost surely, 2^{23144420154500} is an apocalyptic number.

23144420154500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23144420154500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25368436329600).

23144420154500 is an abundant number, since it is smaller than the sum of its proper divisors (27592452504700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23144420154500 is a wasteful number, since it uses less digits than its factorization.

23144420154500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101710 (or 101698 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 23144420154500 its reverse (545102444132), we get a palindrome (23689522598632).

The spelling of 23144420154500 in words is "twenty-three trillion, one hundred forty-four billion, four hundred twenty million, one hundred fifty-four thousand, five hundred".